Collapsible box



FIG. 1 is an upper perspective view of a collapsible box showing my newdesign;

FIG. 2 is a lower perspective view of the design of FIG. 1;

FIG. 3 is a side view of the design of FIG. 1;

FIG. 4 is a reverse side view of the design of FIG. 1;

FIG. 5 is an end view of the design of FIG. 1;

FIG. 6 is a reverse end view of the design of FIG. 1;

FIG. 7 is a top view of the design of FIG. 1; and,

FIG. 8 is a bottom view of the design of FIG. 1.

CLAIM The ornamental design for a collapsible box, as shown.